Answer:
Step-by-step explanation:
The missing number in the given data that has a mean of 79 is: 60.
<h3>How to Find the mean of a Data?</h3>
The mean of a data set is simply the average, that is, it is the sum of all data values divided by the number of data values.
Let x represent the missing number in the data. If the mean is 79, we would have the following:
(89 + 74 + 92 + 80 + x)/5 = 79
(335 + x)/5 = 79
335 + x = 5(79)
335 + x = 395
x = 395 - 335
x = 60
Missing number is: 60.
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Answer:
Step-by-step explanation:
Answer: Y=-5
Step-by-step explanation:
The reason is because if you look down the y axis from the origin you can see the location where the line crosses over the y axis in this case it was at (0,-5)
Answer:
There are 392 storybooks.
There are 49 magazines.
<h3>There are 343 more storybooks than magazines are there in the library.</h3>
Step-by-step explanation:
s = number of storybooks
m = number of magazines
The library has 441 storybooks and magazines altogether.
s + m = 441
There are 8 times as many storybooks as magazines.
s = 8m
How many more storybooks than magazines are there in the library
?
Substitute s = 8m into the original equation to find m.
s + m = 441
8m + m = 441
9m = 441
m = 441/9
m = 49
Substitute m = 49 into the original equation to find s.
s + m = 441
s + 49 = 441
s = 441 - 49
s = 392
s - m = 392 - 49 = 343